Lubricator for internal combustion engines



Dec. 1, 1931. 5, oss ET AL 1,833,913

LUBRICATOR FOR INTERNAL COMBUSTION ENGINES Filed Nov. 7. 1930 ATTORNEY Z6 Patented Dec. 1, .1931

UNITED STATES P AT'ENT oFFrcr: i

STANLEY nnoss AND CHARLES r. EDWARDS, or VANCOUVER, BRITISH COLUMBIA, a

I CANADA 1 I I LUBRICATOR non INTERNAL COMBUSTION ENGINES.

Applicationfiled November 7, 1930'. Serial No. 494,140.

This invention relates to lubricating devices especially designed for use in connection with internal combustion engines for the purpose of lubricating the cylinder walls,

5 pistons and valves of such engines.

The invention has for an object to provide an improved lubricator embodying means to draw oil froma reservoiryand deliver it in a finely divided vesicular condition as a spray into the engine via the intake manifold.

Further, the invention has for an object to provide a means by which the lubricant may be drawn into the engine cylinders under a very low vacuum.

Furtheryit is an object to provide a lubricator having sight feed features whereby the operator may at all times observe the opera-" 7 tion and make such adjustments from time to time as may be necessary in order to obtain the most efficient're'sults.

Further it is an object to provide a lubricator in which the air inlet ports are protected against dirt and clogging and against exposure.

Further, it is an object to provide means whereby the oil is, drawn into'a duct and there converted froma liquid into a continuous stream of air-in-oil bubbles and thereafter treated with an additional quantity of air to burst the bubbles anddissipate V r the oil of the films into 'exceedingly fine particles as a vapor before delivering the same to the engine. v i I 1 Further, the invention has for an object to provide a lubricator of such construction and arrangement of parts that the spray of the fine vesicular mixture of oil and air is swept into the intake pipe and thus/reaches the combustion chambers, piston heads and valves where it is deposited, the actionbeing independent of the level of the free oil surface in the reservoir and is just as efficient whether the reservoir is full ornearly empty.

Further, it is an object of the invention to provide a lubricator in which there are no mechanical moving. parts, and in virtue of which the lubricator will function properly at all times regardless of the period it may have been in use.

' Further, it is an object of the invention to provide a lubricator whioh will draw'oil into achamber and uponits entry convert it 1nto vesicular bodles of a1r-1n-o1l filmsand then explode those bodies with additional air before the resultant vapor is delivered into the engine.

Further, it is an object to provide asimple,

eflicient device for the purpose'described that detailed description, then be. particularly.

pointed out in the appended claims, reference being had to the accompanying drawings, in

which Figure 1 is a diagrammatic view showing the relation of the oil reservoir and the intake manifold to the lubricator proper. Figure 2 isa perspective view of thelubr-r cator proper.

part vertical section taken on the line 33 of Figure 4. I Figure 4 is a side elevation of the lubricator proper. I

55 ofFigure 3. y y i Figure 6 is a vertical section onthe line 6-6 of Figure 3. r i Figure 7 is a perspective view of the re? movable plug.

which consists of a body having a base 2anda head 3 connected by an intermediate part Figure 3is an enlarged front elevation and 85" Figure 5 is ahorizontal section on the line and base.

from the intake manifold of the the latter having its front portion removed te expose a groove 5 that extends into the head The head is provided with an outlet duct comprising the receiving end 6, with a narrow passagel8, and a delivery end 7, the latter being somewhat in the form of a chamber and the head is tapped so that an elbow 31 may be screwed into the head, the elbow 31 having a minute entrance aperture 32 to register with the chambered portion 7 of the outlet duct of the head 3. The suction duct 33 engine is connected with the elbow 31.

9. is a drill hole which extends into the head and has its entrant end plugged as at 10. The drill hole'9 communicates with the duct portion 7 through a valved passage 11 controlledby a needle valve 13 that is threaded into the head 3 and is provided with a lock nut 15 and a turning head 1% as indicated, the

needle valve 13 being threaded at 12 into the head 3. r

v 916 i'sa small air port'communicating with the drill hole 9 and with the atmosphere at a point within the groove 5 in back of the sight glasstube 35 that is held in the groove ,5 but spaced slightly from the wall thereof. The port 16 may be formed by drilling through the head and intersecting the drill hole 9 and later plugging the outer portion of the drill hole as at 17, or it may be drilled from the groove enddirectly into'the' drill hole 9 as may be found convenient. f The head 3 has a seat'l8 against which the glass tube 35 is held in gas-tight engagement ina'manner presently explained, there being a suitable feltjwasher 36 interposed between the seat 18 and the end of the tubev 35 asshown. r

The base part 2 is drilled and tapped as at 19 toreceive'a removable screw plug 20, the latter having an annular air space or groove 21 and also being provided with a seat 22 for the tube 35, a felt washer 36 being interposed between that seat and the adj acentendof the.

7 tube... By screwing the; plug 20 tightly into, the base2the tube 35 is held rigidly in osi-" tion and sealed againstleakage of air and oil, r

The lug 201s alsoprovided with acup-like portion 23 into the bottom of which the mlet end 24 of the oil duct 2425 deliver oil from the .elbow 26 that is screwed into the base 2 and into the plug 20, thus locking the plugagainst coming unscrewed.

The elbow 26 has its end 27 provided with a coupling 28' to the pipe 29 that extends into the supply tank 30, the latter being located at any convenient place.

It is to be observed that the opening throughthe elbow 26 that delivers the oil into the entrance portion 250i the intake. duct 24.-25; is of relatively considerable cross sectional area, it n'otbeing necessary to restrict, this'opening :in the elbow. However, .the out-.

let opening 32 through the elbow 31 is preferably considerably restricted.

37 is an air duct'in the base 2, the entrant end of which is drilled from the groove 5 so as to lie behind the glass tube 35,'while the delivery end'of the duct 37 communicateswith the airspace 21. .The plug20 has a restricted air passage 38 from the air.

space 21 into the recess 23 of the plug so thata limited amount of air may bed'raw'nvaporized oil 'is delivered to the engine.

When the engine is running the suction causes the oil to be drawn into the glass tube .35 the parts 29, 28,27, 26, 25, 24 and 23 at the same time air is sucked into the bottom of the tube 35through thepassa ge38and caused to act upon the oil so as to transform the oil column into a column of bubbles or 'froth, this.

column of bubbles or frothextending from the top of the oil column (which oil column seldom reaches above the top of the base 2) to the head 3. The oil bubbles then passing through the restricted portion of the outlet duct 8 into the enlarged area 7 where they encounter additional air via thejport 11 and are exploded or burst, thereby distributing the oil particles of the film throughout the air within the space and in effect carburetting it. The air particles at this time are so tiny that the stream of material passing through the suction line 33 into the intake manifoldis in the form of an'exceedingly light vapor,- the oil being in an exceedingly finely atomized state. V I

From the foregoing description, taken in connection with the accompanying drawings, it is thought the complete construction, oper ation and advantages of the invention will be understood by those skilled in the art, and it will be further understood that slight changes in'the details of construction, arrangement and designof partsm-ay be made without departing from the spirit of the invention orthe scope'of the appended claims. WVhat is claimed is g i v 1.. A lubricator comprising ab'ody-having a recess with a seat atits top end,ia transparent tube heldin said recess with its top end'sealed; against said seat, said body having a'pa'ssage through its lower end registering with the lower end of said recess, a plug held insaid passage and, itself having a seat sealed against the lower end of said tube, a suction duct communicating at one 'end j with the upper end of said tube and at the other end with a sourceof suction, valve controlled means to admit air to said body at a location between said suction. duct and its place of communication with. the upper end' of. said tube, means to pass oil to said tube through said plug, means to pass a restricted volume of air into said tube through said plug, and

a duct from a source of oil supply to said body and plug.

2. A lubricator comprising a body having a base portion, a head portion and an inter: mediate part, the latter having an exposed groove, said base and said head portions having provisions to receive a tube, and said base portion having a passage through which thetube may be inserted, a tube held in said groove, a plug closing said passage, said head portion having a seat for the upper end of said tube, and said plug having a seat for the lower end of said tube, said plug having an oil inlet passage to said tube, means con- 7 veying oil from a source to said oil inlet passage, said head having an outlet passage communicating at one end with said tube and at its other end with a suction means, said plug having an air space between itself and said base, said body having an 'air duct from said groove to said air space, said plug having a restricted port between said air space and the interior of said tube, and controlled means in communication with said outlet passage for admitting air thereto. I

3. A lubricator comprising a body having a base portion, a head portion and an intermediate part, the latter having an exposed groove, said base and said head portlons having provisions to receive a tube, and said base portion having a passage through which the tube may be inserted, a tube held in sa d groove, plug closing said passage, said head portion having a seat for the upper end of said tube, and said plug having a seat for the lower end of said tube, said plug having an oil inlet passage to said tube, m eans conveying oil from a source to sa1d oil inlet passage, said head having an outlet passage communicating at one end with said tube and at its other end with a suction means, said plug having an air space between itself and.

said base, said body having an air duct from said groove to sand air space, said plug having a restricted port betweensaid air space and the interior of said tube, controlled.

means in communication with said outlet passage for admitting air thereto, sa1 d controlled means comprising an an duct in said head from said groove to said outlet passage, and a needle valve in said head to control the area of said air duct. 7

4. A lubricator comprising a body having a base portion, a head portion and an intermediate part, the latter having an exposed groove, said base and said head portions having provisions to receive a tube, and said base portion having a passage through which the tube may be inserted, a tube held in said groove, a plug closing said passage, said head portion having a seat for the upper end of said tube, and said plug having a seat for the lower end of said tube, said plug having an oil inlet passage to said tube, means conveying oil from a source to said oil inle-t passage, said head having an outlet passage communicating at one end with said tube and at its other end with a suction means, said plug having an airspace between itself and said base, said body having an air duct from a said groove to said air space, said plug having a restricted port between said air space and the interior of said tube, and controlled means in communication with said outlet passage for admitting air thereto, said tube serving to protect the entrance of said air ducts from solid matter.

5. In lubricators, a body having ahead portion, a base portion and an intermediate portion, the latter having an open sided grooved face, a glass tube located in the groove of said face but out of contact therewith, said head having a seat for said glass tube and having a discharge duct to efiect communication between said glass tube and a source of suction, said basehaving a passage for said tube, a plug closing said passage and having a seat for said glass tube and adapted to hold said glass tube seated.

said plug and said base having an oil inlet passage communicating with said glass tube,

a tubular member screwed into said-base and plug inlet passages and adapted for .communication with a source of oil supply, said,

base having an air duct from said groove'behind said glass tube to said plug, said plug. 

